function collapseThread( theId ) {
			var comment = document.getElementById(theId);
			var theBody = findBody(comment);
			if(comment.className.indexOf("collapsed") > -1) {
				comment.className = comment.className.replace(" collapsed", "");;
			} else {
				comment.className += " collapsed";
			}
		}

		function expandThread( theId ) {
			var comment = document.getElementById(theId);
			var theBody = findBody(comment);
			if(comment.className.indexOf("collapsed") > -1) {
				comment.className = comment.className.replace(" collapsed", "");;
			} 
		}
		
		function findBody(el)
		{
			var divs = el.getElementsByTagName("div");
			var ret;
			for(var i = 0; i < divs.length; ++i) {
				if(divs.item(i).className.indexOf("body") > -1)
					return divs.item(i);
			}
			return false;
		}
	
		function onAddComment() {
			//checkDocumentIntegrity();
			var el = document.getElementById("commentform");
			// Future release: Check if form is filled correctly and mark the form fields.
			el.submit();
		}
		
		function moveAddCommentBelow(theId, threadId, collapse)
		{
			expandThread( theId );
			var addComment = document.getElementById("addcomment");
			var comment = document.getElementById(theId);
			if(collapse)
			{
				for(var i = 0; i < comment.childNodes.length; ++i) {
					var c = comment.childNodes.item(i);
					if(typeof(c.className) == "string" && c.className.indexOf("collapsed")<0) {
						c.className += " collapsed";
					}
				}
			}
			addComment.parentNode.removeChild(addComment);

			comment.appendChild(addComment);
			if(comment.className.indexOf("alt")>-1) {
				addComment.className = addComment.className.replace(" alt", "");					
			} else {
				addComment.className += " alt";
			}
		        var replyId = document.getElementById("comment_reply_ID");
			replyId.value = threadId;
			var reRootElement = document.getElementById("reroot");
			reRootElement.style.display = "block";
			var aTags = comment.getElementsByTagName("A");
			var anc = aTags.item(0).id;
			//document.location.href = "#"+anc;
			document.getElementById("comment").focus();
		}

		function checkDocumentIntegrity()
		{
			str = "";
			
			str += checkElement("reroot","div tag");
			str += checkElement("addcomment", "div tag");
			str += checkElement("comment_reply_ID", "hidden form field");
			str += checkElement("content", "div tag");
			str += checkElement("comment", "textfield");
			str += checkElement("addcommentanchor", "anchor tag");
		
		}
               
		function checkElement(theId, elDesc)
		{
			var el = document.getElementById(theId);
			if(!el)
			{
				if(elDesc == null)
					elDesc = "element";
				return "- The "+elDesc+" with the ID '" +theId + "' is missing\n"; 
			}
			else 
				return "";
		}
		
		function reRoot()
		{
			var addComment = document.getElementById("addcomment");			
			var reRootElement = document.getElementById("reroot");
			reRootElement.style.display = "none";
			var content = document.getElementById("content-main");
			if( !content )
				content = document.getElementById("content");
			if( content )
			{
				addComment.parentNode.removeChild(addComment);
				content.appendChild(addComment);
			}
			addComment.className = addComment.className.replace(" alt", "");
			document.location.href = "#addcommentanchor";
			document.getElementById("comment").focus();				
			document.getElementById("comment_reply_ID").value = "0";
		}			
		
		function changeCommentSize(d)
		{
			var el = document.getElementById("comment");
			var height = parseInt(el.style.height);
			if(!height && el.offsetHeight)
				height = el.offsetHeight;
			height += d;
			if(height < 20) 
				height = 20;
			el.style.height = height+"px";
		}